Automatic lighting control
Typical 55 lux turn-on and 110 lux turn-off thresholds provide separate switching levels for dusk and daylight.
Enlarge imageTraffic electronics
Dusk-to-dawn photocell controllers
Our enclosed photocell controllers switch suitable lighting loads on and off as ambient light changes. They provide automatic dusk-to-dawn operation for illuminated signs, lighting and other roadside equipment.
The range offers separate 24 V DC, 48 V DC, 48 V AC and 230 V AC versions. Photocells are available with a NEMA three-pin socket and 1 m flying leads, with a screw-terminal socket, or as a photocell only without either socket option.
Key features
Choice of supply versions
Dedicated AC and DC variants allow the appropriate controller to be selected for the installation.
Choice of connection options
Available with a three-pin socket and 1 m flying leads, a screw-terminal socket, or as a photocell only for an existing compatible socket.
Enclosed construction
The documented 24 V DC and 230 V AC versions use a UV-stabilised polycarbonate cover and achieve IP67 when the socket is sealed.
Technical specifications
Product specifications and configuration options for your equipment.
Request technical information| Supply variants | 24 V DC; 48 V DC; 48 V AC; 230 V AC - separate versions |
|---|---|
| 230 V AC version operating voltage | 105–305 V AC |
| 230 V AC version frequency | 50 Hz |
| 230 V AC version rated load | 1000 W; suitability depends on the load type and start-up current |
| 230 V AC version current rating | 5 A |
| 230 V AC version power consumption | <0.5 W at 120 V AC |
| 24 V DC version operating voltage | 12–24 V DC |
| 24 V DC version load selection | Load-matching support available for the intended application |
| 48 V versions | Separate AC and DC versions; detailed specifications available on enquiry |
| Control function | Automatic on/off dusk-to-dawn switching |
| Turn-on threshold | 55 lux nominal |
| Turn-off threshold | 110 lux nominal |
| Operating temperature, 24 V DC version and 230 V AC version | -40 to +70 °C |
| Enclosure rating, 24 V DC version and 230 V AC version | IP67 when the socket is sealed |
| Connection options | NEMA three-pin socket with 1 m flying leads; screw-terminal socket; or photocell only without a socket |
| Switching endurance | At least 10,000 switching cycles, subject to the specified load and version |
| Time delay | Integrated |
| Surge protection | Integrated |
Suggested traffic applications
Illuminated traffic signs
Automatic switching of suitable sign lighting according to ambient light.
Outdoor and roadside lighting
Dusk-to-dawn control in equipment designed for the selected controller and socket.
Integration and available options
We offer separate AC and DC supply versions, with support to match the controller to the load and switching requirements of your equipment. The specifications above distinguish the 24 V DC and 230 V AC versions; detailed information is also available for the 48 V options.
The photocell can be supplied with a three-pin socket and 1 m flying leads, with a screw-terminal socket, or on its own for use with an existing compatible socket. We can provide the connection and mounting details for the chosen arrangement. The IP67 rating depends on the socket being correctly sealed.
The controller provides automatic on/off switching at dusk and daylight. We can discuss its use alongside separate dimming equipment, as well as low-standby operation, surge protection and any required fault behaviour. Dusk-to-dawn switching is not itself a safety function.
Our integration support includes sensor placement, drainage, impact and enclosure considerations, together with the UKCA, CE and RoHS information applicable to the controller version and destination market.
Options and customisation
We can help select the supply version, switching arrangement and socket option for your equipment. The range supports both new installations and photocell-only replacement of a unit in a compatible socket.
For equipment that needs a compact sensor mounted through the enclosure panel, our mini photocell provides a separate wire-in option.
Discuss your equipment with us
Tell us about the supply, interfaces and enclosure your project needs.
Enquire about photocell controllers